I tried out grid and it worked for the most part but I wanted to get the buttons to resize if I resized the window. I couldn't figure out how to do this with grid. JamesNC suggested a way of using pack to get the buttons right, the seperate frames, just as you said. And that worked nicely.
Thanks for your advice any way. If you know how to get the buttons to expand I'd be more than happy to give grid a try again.